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WAC, a novel GBM tumor suppressor, induces GBM cell apoptosis and promotes autophagy
Yixuan Wang1,2, Si Zhang1,2, Qian Sun1,2
1Department of Neurosurgery, Renmin Hospital of Wuhan University, 238 Jiefang Street, Wuhan, 430060, Hubei, China.
Abstract:
WAC is closely related to the occurrence and development of tumors. However, its role in human glioblastoma (GBM) and its potential regulatory mechanisms have not been investigated. This study demonstrated that WAC is downregulated in GBM, and its low expression predicts a poor prognosis. We investigated the effect of WAC on the proliferation of glioma cells through a CCK-8 assay, EdU incorporation, and cell formation. The effects of WAC on apoptosis and autophagy in glioma were determined by flow cytometry, TUNEL detection, immunofluorescence, q-PCR, WB, and scanning electron microscopy. We found that overexpression of WAC inhibited the proliferation of glioma cells, promoted apoptosis, and induced autophagy. Therefore, WAC is likely to play a role as a new regulatory molecule in glioma.
Insights
The WAC protein is downregulated in human glioblastoma (GBM), a brain tumor. Its reduced expression indicates a poor prognosis, suggesting WAC acts as a tumor suppressor.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- The role of WAC (Wilms tumor 1-associated component) in tumor development is recognized.
- Its specific function and regulatory mechanisms in human glioblastoma (GBM) remain largely uninvestigated.
Purpose of the Study:
- To investigate the expression levels of WAC in GBM.
- To determine the functional role of WAC in glioma cell proliferation, apoptosis, and autophagy.
- To explore WAC's potential as a regulatory molecule in GBM.
Main Methods:
- Quantitative real-time PCR (q-PCR) and Western blot (WB) for gene and protein expression analysis.
- Cell proliferation assays including CCK-8, EdU incorporation, and cell formation assays.
- Apoptosis assessment via flow cytometry and TUNEL detection.
- Autophagy evaluation using immunofluorescence and scanning electron microscopy.
Main Results:
- WAC expression is significantly downregulated in GBM tissues.
- Low WAC expression correlates with a poor prognosis in GBM patients.
- Overexpression of WAC suppressed glioma cell proliferation.
- WAC overexpression promoted glioma cell apoptosis and induced autophagy.
Conclusions:
- WAC functions as a tumor suppressor in human glioblastoma.
- WAC's downregulation impacts glioma progression.
- WAC may serve as a novel therapeutic target or biomarker for GBM.
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